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  <title>八进制转换为十进制</title>
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  <div id="layout-content"><div id="function.octdec" class="refentry">
   <div class="refnamediv">
    <h1 class="refname">octdec</h1>
    <p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">octdec</span> &mdash; <span class="dc-title">八进制转换为十进制</span></p>

   </div>
 <div class="refsect1 description" id="refsect1-function.octdec-description">
  <h3 class="title">说明</h3>
   <div class="methodsynopsis dc-description">
    <span class="methodname"><strong>octdec</strong></span>
     ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$octal_string</code></span>
    ) : <span class="type"><a href="language.pseudo-types.html#language.types.number" class="type number">number</a></span></div>

    <p class="para rdfs-comment">
     返回 <code class="parameter">octal_string</code>
     参数所表示的八进制数的十进制等值。
    </p>
   </div>

 <div class="refsect1 parameters" id="refsect1-function.octdec-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<code class="parameter">octal_string</code></dt>

     <dd>

      <p class="para">
       要转换的八进制的字符串
      </p>
     </dd>

    
   </dl>

  </p>
 </div>

 <div class="refsect1 returnvalues" id="refsect1-function.octdec-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   <code class="parameter">octal_string</code> 的十进制的表示
  </p>
 </div>

 <div class="refsect1 changelog" id="refsect1-function.octdec-changelog">
  <h3 class="title">更新日志</h3>
  <p class="para">
   <table class="doctable informaltable">
    
     <thead>
      <tr>
       <th>版本</th>
       <th>说明</th>
      </tr>

     </thead>

     <tbody class="tbody">
      <tr>
       <td>4.1.0</td>
       <td>
        该函数可以处理 <span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span> 大数字，这种情况下，它会返回 <span class="type"><a href="language.types.float.html" class="type float">float</a></span> 类型。
       </td>
      </tr>

     </tbody>
    
   </table>

  </p>
 </div>

 <div class="refsect1 examples" id="refsect1-function.octdec-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-4137">
    <p><strong>Example #1 <span class="function"><strong>octdec()</strong></span> 例子</strong></p>
    <div class="example-contents">
<div class="phpcode"><pre><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">echo&nbsp;</span><span style="color: #0000BB">octdec</span><span style="color: #007700">(</span><span style="color: #DD0000">'77'</span><span style="color: #007700">)&nbsp;.&nbsp;</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />echo&nbsp;</span><span style="color: #0000BB">octdec</span><span style="color: #007700">(</span><span style="color: #0000BB">decoct</span><span style="color: #007700">(</span><span style="color: #0000BB">45</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</pre></div>
    </div>

    <div class="example-contents"><p>以上例程会输出：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
63
45
</pre></div>
    </div>
   </div>
  </p>
 </div>

 <div class="refsect1 seealso" id="refsect1-function.octdec-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="decoct.html" class="function" rel="rdfs-seeAlso">decoct()</a> - 十进制转换为八进制</span></li>
    <li class="member"><span class="function"><a href="bindec.html" class="function" rel="rdfs-seeAlso">bindec()</a> - 二进制转换为十进制</span></li>
    <li class="member"><span class="function"><a href="hexdec.html" class="function" rel="rdfs-seeAlso">hexdec()</a> - 十六进制转换为十进制</span></li>
    <li class="member"><span class="function"><a href="base_convert.html" class="function" rel="rdfs-seeAlso">base_convert()</a> - 在任意进制之间转换数字</span></li>
   </ul>
  </p>
 </div>

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